77344344037 has 2 divisors, whose sum is σ = 77344344038. Its totient is φ = 77344344036.

The previous prime is 77344344029. The next prime is 77344344053. The reversal of 77344344037 is 73044344377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65782503361 + 11561840676 = 256481^2 + 107526^2 .

It is a cyclic number.

It is not a de Polignac number, because 77344344037 - 2³ = 77344344029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77344344137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38672172018 + 38672172019.

It is an arithmetic number, because the mean of its divisors is an integer number (38672172019).

Almost surely, 2^77344344037 is an apocalyptic number.

It is an amenable number.

77344344037 is a deficient number, since it is larger than the sum of its proper divisors (1).

77344344037 is an equidigital number, since it uses as much as digits as its factorization.

77344344037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 46.

The spelling of 77344344037 in words is "seventy-seven billion, three hundred forty-four million, three hundred forty-four thousand, thirty-seven".